Sodium Bicarbonate → HCID 19785836, compound

HRID 846852Notes

Reaction equation

[OH:1][CH2:2][CH2:3][O:4][C:5]([NH:7][CH2:8][CH2:9][N:10]([C:20]1[N:25]=[C:24]([N:26]([CH2:36][CH2:37][NH:38][C:39]([O:41][CH2:42][CH2:43][OH:44])=[O:40])[CH2:27][CH2:28][NH:29][C:30]([O:32][CH2:33][CH2:34][OH:35])=[O:31])[N:23]=[C:22](Cl)[N:21]=1)[CH2:11][CH2:12][NH:13][C:14]([O:16][CH2:17][CH2:18][OH:19])=[O:15])=[O:6].[C:46](=[O:49])([OH:48])[O-].[Na+]>C(O)CO>[OH:1][CH2:2][CH2:3][O:4][C:5]([NH:7][CH2:8][CH2:9][N:10]([CH2:11][CH2:12][NH:13][C:14]([O:16][CH2:17][CH2:18][OH:19])=[O:15])[C:20]1[N:25]=[C:24]([N:26]([CH2:36][CH2:37][NH:38][C:39]([O:41][CH2:42][CH2:43][OH:44])=[O:40])[CH2:27][CH2:28][NH:29][C:30]([O:32][CH2:33][CH2:34][OH:35])=[O:31])[N:23]=[C:22]([N:10]([CH2:9][CH2:8][NH:7][C:5]([O:4][CH2:3][CH2:2][OH:1])=[O:6])[CH2:11][CH2:12][NH:13][C:46]([O:48][CH2:18][CH2:17][OH:16])=[O:49])[N:21]=1)=[O:6]

Participants

Conditions

Temperature: 115 °C

Procedure

To 6.7 g of (I) (Example 1, TECT) were added 2.8 g HEC, 0.84 g sodium bicarbonate and 25 g ethylene glycol. The reaction mixture was then heated to 115° C. in an oil bath for 4 hours, after which most of the HEC had reacted with TECT as indicated by amine titration of the reaction mixture. Ethylene glycol was distilled off under reduced pressure. The residue was poured into methanol. Separated solids were filtered and recrystallized from methanol. Yield 5.6 g (60% of theoretical), m.p. 192° C. The nmr and fab mass spectra confirmed the product to be of FORMULA II: ##STR20##

Workup

customafter which most of the HEC had reacted with TECT
distillationEthylene glycol was distilled off under reduced pressure
additionThe residue was poured into methanol
customSeparated solids
filtrationwere filtered
customrecrystallized from methanol

Sources & evidence

ORD record: ord-5c17bebedf864b6f96dca40c9f7de3d0
Source dataset: uspto-grants-1992_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05138055

Reaction notes

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